I have an older pressure treated fence around a pool and the top plate (2 x 6 with a 2 x 4 at 90 degrees) is in need of replacement. Thinking of using Trex (or a similar substitute) in lieu of pressure treated and eventually replacing all the fence with the same material. Does anyone have first hand experience with trex in horizontal applications? Particularly interested in knowing of mildew problems, color stability, shrinkage and eventually slipperiness.
Thanks.